He specifically states that they are with the Rift. See below from his #111 post. What I'm I missing?
In VR Settings, I set Pixel Density (PD) to 1.5
And with two runs on each card using the Oculus Rift, here is what I got (averaged with FRAPS):
1080 – 53.9 FPS – Averaged 5.2% CPU usage
1080 Ti – 72.1 FPS – Average 5.3% CPU usage
2080 Ti – 91.3 FPS – Averaged 5% CPU usage